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Finding the Fourth Proportional to 345,608.88, 518,485.68 and 145,929.84

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Solution

The fourth proportional to 345,608.88, 518,485.68 and 145,929.84 is: 218,925.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,608.88 : 518,485.68 = 145,929.84 : x
  2. Step 2: Convert to fraction form
    345,608.88/518,485.68 = 145,929.84/x
  3. Step 3: Cross multiply
    345,608.88x = 518,485.68 × 145,929.84
  4. Step 4: Simplify right side
    345,608.88x = 75,662,532,324.69
  5. Step 5: Solve for x
    x = 75,662,532,324.69/345,608.88
  6. Step 6: Final answer
    x = 218,925.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.